package com.candy.control;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/changeSessionScope")
public class ChangeSessionScopeServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//        获取ServletContext（Application）对象
        req.getSession().setAttribute("SessionName","sessionValue_old");
        req.getSession().setAttribute("SessionName","sessionValue_new");
        req.getSession().removeAttribute("SessionName");
    }
}
